We might have to stop using the term "e-retail," since "e-retail" has shifted to the mainstream. And we may, soon, have to stop using the term "mobile shopper." It appears that soon, we all will be.
Internet Retailer notes what it calls "a major new phenomenon in e-retail" - customers who only use mobile. In its article, the website notes that 1/3 of the shoppers at the 10 ten retailers shop on mobile-only devices. It's a huge shift in platform - and in the type of shopper.
In a separate article, Internet Retailer notes that mobile shoppers aren't just comparing prices with their devices in stores - they're looking up reviews, researching a product, and visiting that store's mobile site.